tree 70e63c159ebfbf5b8e61375e0a8d471060cff724
parent 6ab8172b6938c48864f4e9beef6a313d785824fe
author Junyu Lai <junyulai@google.com> 1652895311 +0800
committer Junyu Lai <junyulai@google.com> 1652923994 +0800

Add null check when list directory

This change protect getPlatformFileListForPrefix from
crashing when the directory exist but cannot be listed.
This generally happens when the caller doesn't have
enough permission to list.

Test: atest CtsNetTestCases:android.net.cts.NetworkStatsManagerTest#testDataMigrationUtils
Ignore-AOSP-First: in a topic with internal-only changes
Bug: 230289468
Change-Id: I4177a8229cc9db18d76cb90c54a1b8d12ef8d98f